METHOD OF UPGRADING SEISMIC PERFORMANCE OF EXISTING SPILLWAY PIERS ON DAMS AND COUPLED EARTHQUAKE-RESISTANT STRUCTURE
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United States of America Patent
Stats
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N/A
Issued Date -
Sep 13, 2012
app pub date -
Nov 12, 2010
filing date -
Nov 12, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of improving earthquake resistance of existing spillway piers provided in a dam. The method includes a following step. End portions of a main beam and top portions of existing spillway piers are connected to each other with a high damping device having a history damping property with high primary rigidity. The high damping device has a yield displacement amount in seismic velocity smaller than a tolerance of a displacement amount of the existing spillway piers. The high damping device has a yield load value in seismic velocity greater than a maximum seismic force generated therein in a bridge-axis direction due to a large-scale earthquake.
First Claim
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